Sound-reproducing machine.



A. W SCHMIDT. SOUND REPRODUCING MACHINE- APPLICATION FILED oar. 26. 1314.

1,158,728, Patented Nov. 2, 1915.

2 SHEETS-SHEET l.

- I wuewtoz RNNiE W. SCHPMDT A. W. SCHMIDT. SOUND REPRODUCING MACHINE. APPLICA TiON FILED OCT 26, 1914.

Patented Nov. 2, 1915.

2 sHEETS-sH EET 2.

www MM tlttozneg ANNIE VT. SCHMIDT, OF OAKLAND, CALIFORNIA.

SOUND-R-EPRODUCING MACHINE.

Specification of Letters Patent.

Patented Nov. 2, 1915.

Application filed October 26, 1914. Serial No. 868.718.

1 b all whom it may concern:

Be it known that 1, Annie Vi. Scnainn, a subject of the Emperor of Austria-Hungary, residing at Oakland. in the county of Alameda and State of California, have invented certain new and usful Improvements in Sound-Reproducing ltiarhines, of which the followin is a sgecification, reference being had to tie accompanying drawings.

This invention relates to certain improvements in sound reproducing machines, and the object of my invention is to provide a device of this general character having novel and improved means whereby a reproduction of sound may be obtained with a maximum of tone quality and whereby the possibility of foreign sounds is substantially eliminated. y

The invention consists in the details of construction and in the combination and arr1: ngement of the several parts of my im proved machine whereby certain important advantages are attained and the device is rendered simpler, less expensive and otherwise more convenient and advantageous for use. all as will be hereinafter more fully set forth.

The novel features of the invention will be carefully defined in the appended claims.

In orde that my invention may be the better understood. I will now proceed to de scribe the same with reference to the accom panying drawings, wherein Figure 1 is a view in perspective of a reproducing machine constructed in accordance with an embodiment of my invention; Fig. 2 is a vertical sectional view taken through the casing or cabinet of my device as herein embodied. with the sound reproducing mechanism in elevation; Fig. 8 is an enlarged fragmentary sectional view illus trating the mechanism herein embodied for controlling the swinging side member or damper: Fig. 4.- is an enlarged fragmentary detail view illustrating the keeper included in the locking mechanism disclosed particularly in Fig. 3: Fig. 5 is an enlarged fragnientary view illustrating in detail thelocking means herein embodied for maintaining the swinging side member or damper in .closed position: Fig. 6 is an enlarged view,

partly in elevation and partly in section, of the sound reprodinfiing mechanism as herein embodied; the sound box being shown adjusted to an inoperative position: Fig. 7 is an enlarged fragmentary view illustrating the means for holding the supporting arm included in the sound reproducing mechanism against swinging movement; Fig. 8 is a view in elevation, with a part in section, of the locking memberas disclosed in Fig. 7; Fig. 9 is an enlarged fragmentary sectional view of the elbow embodied in my present sound reproducing mechanism and illustrating the coacting parts in operative connection therewith; Fig. 10 is a view, partly in side elevation and partly in section. of the sound box as herein embodied; Fig. 11 is a view in perspective. detached, of the butterfly mounting employed in connection with the sound box: Fig. 12 is a detail sectional vview of the sound box illustrating an anchoring means for the butterfly mounting; Fig. 13 is an enlarged fragmentary view, partly in elevation and partly in section; illustrating certain details of the stylus arm and stylus member; Fig. 1% is a fragmentary deta l view illustrating the means for expanding or contracting the bar rel as herein embodied: and Fig 15 is a fragmentary perspective view. on an enlarged sale. illustrating the tube mounting for the diaphragm.

As disclosed in the :n'compairving drawings. 1 denotes a cabinet of prcdeterinincd dimensions and configuration provided with a chamber 2 in which is mounted a horn member 3, the outer end of which termi nates in close proximity to one side or damper l of the casing and is substantially oval in form. lhe side or damper l of the casing is formed of frctwork and has its'uppcr longitudinal edge pivotally engaged with the top portion 5 of the casing and is maintained in closed position. as herein cmbodied and particularly shown in Fig. 5, through the medium of the spring controlled ball (3 adapted to be accommodated within a suitable socket l3 suitably produced in the under edge of the side or damper -l-.

As is believed to be self vidcni, the raisingof the side or damper l c -drols the volume of sound emitted and in order that the side or damper l n: y be ellectivcly maintained in its different adjustments, I pivotally mountwithin a suitable slot T produced in an end marginal portion of said damper the inwardly directed segmental men'ibcr s, the lower edge of which is provided with inwardly disposed teeth 1) adapted to coact with the pin 10 carried by the keeper ll suitably secured to the adjacent end wall 12 of the 'c'abihet l, as is believed to be particularly shown in Figs. 3 and 4. I also find it of advantage to have the pivotedextremity or: the'member 8. provided with an angular extension 14 adapted to overlie the outer :Jftce of the side or damper l and having threaded therethrough the screw member 15 adapted-to engage the outer face of the damper 4. i l

The inner or small end of the liornis in communication with the vertically disposed bore lG produced in the block 17 suitably mounted within the chamber 2 at the rear thereof and at substantially midway thereof, said bore 16 being also in communication with an opening in the top 5 of the cabinet, as indicated by dotted lines at 18 in Fig. 2.

Positioned above the top portion 5 of the cabinet and at substantially the axial center thereotis the rotatable table 19 of conventional construction and on which a record disk is adapted to be positioned.

Secured to the top portion 5 of the cabinet I and surrounding the opening 18 is a'barrel 20 in which is positioned a tubular member 21 provided with the longitudinally directed rack 22 with which is adapted to mesh the pinion-23 operatively supported within the v slot or opening 24 produced in the barrel 2O and whereby it will be readily perceived that the tubular member 21 may be readily and conveniently raised when the requirements of practice so necessitate, it being understood that the the finger.

Diamctrically opposed to the opening 24, the, barrel 20 is provided with a longitudinally disposed open ended slot extending a predetermined distance thercalong and portions of the barrel afforded the marginal by the'open ended slot 25 are provided with the outstanding perforate ears 26, one of the passagewhich is screw-threaded for therethrough of the headed threaded member 27, the extremity thereof being reduced and smooth and having a swivel engagement with the coacting ear By this arrangement, it will be readily seen that the barrel 20 may be contracted to clamp the tubular member 21 in its differing adjustments therein and expanded toreadily permit such ad- "justment being obtained. Disposed within the tubular member 21 is the lower extremity'of a sleeve 28' withgwhich is detachably engaged an annular member 29 adapted to underlie the annulanshoulder 30 on the tubula member 2l ,,a nd the opposed faces of the a, uular member 29 and the shoiilder 30 are providedwiththeraceways 31in which are disposed the anti-triction members 32, herein disclosed as conventional ball bearings. The upper or outer extremity of the sleeve 28 is provided with an annular head. 32 adapted to overlie the upper edge 33 of the tubular member rnd the opposed faces of said heatll 32 and upper edge 33 are provided with the race-ways 3% in which are disposed the anti-friction members 35 also herein disclbsed as conventional ball bearings. In practice I have found it of advantage to have the head 32 integrally produced with the sleeve 28 and it will therefore be readily understood that the sleeve 28 pinion 23 may be readily rotated by will be operatively engaged with the tubular member 21 before said tubular member 21 is positioned within the barrel 2-0. p

The head portion of the bore of the sleeve 28 is of increased diameter, as indicated at 36, in order to properly receive the angular portion 37 of the tubular supporting arm 38, the major portion thereof being adapted to be disposed over the rotatable table 19 and positioned in a plane substantially parallel to the plane occupied by said table,

The free extremity of the angular portion 37 of the arm 38 is provided with the. annularvfiange 39 with which coacts the member 40, as is particularly shown in 'Fig. 6, threaded through the head'32 and overlying the flange 39 in order to maintain the arm 38 in assembled relation. In order to maintain the arm 38 against swinging movement relatively to the sleeve 28, I provide the flange 39 at a predeterminedl point with the cavity 41 adapted to receive an extremity of the endwise movable member 42 mounted for reciprocating movement within the cylindrical casing 43 detachably engaged, as indicated at 4%, with the head 32 of the sleeve 28. The cylindrical casing +l3 is provided with a bayonet slot 45, as is believed to be particularly shown in Figs. 7 and 8, through which projects the operating member 46 connected with the endwise movable member 5L2 where by it will be readily perceived that upon axial movement being imparted to the end wise movable membe' to the positioi as shown in Fig. 8, said member will be locked in operative engagement with the arm 38 or more particularly the flange 3!) thereof. The endwise movable member -42 is provided with an annular shoulder and interposed between said shoulder and the inner end of the casing and surrounding member 42 is the expansible member 47, herein disclosed as a conventional coil spring, possessing sullicient tension as to normally maintain the endwise movable member 4-2 in a retracted position so that the arm 38 is capable of swinging movement.

It is to be observed, as indicated at :8 in. Fig. 7, that the upper marginal portion of the barrel 2011s cut-away in order to otl'er no obstruction to the axial rotation of the sleeve 28 when the arm 38 is operatively engaged with a record upon the supporting 0 as herein disclosed, is tapering and the .to bear against the sleeve 57,

' into which the set screw tree edge 49 thereof is beveled inwardly, and said outer extremity of the arm 38 is adapt ed to be disposed within the elbow 50 and maintained in operative connection therewith through the medium of the set screw 51 threaded through the elbow and adapted to project within the annular groove 52 pro duced in the periphery of the arm 38 adjacent the outer extremity thereof. In order that the set screw 51 may readily engage within the annular groove 52 when the elbow 50 is being applied, I provide the arm 38 with the annular flange with which the adjacent extremity of the elbow is adapted to contact. By providing the bevel 49, it will be perceived that no injurious obstruction or hindrance will be given to the sounds passing through the elbow and within the arm 38.

As herein disclosed, the sound box S comprises two sections 54. and 55 capable of detachable engagement and adapted to suitably retain the diaphragm D, the outer sec tion 55 having its base substantially open in order to permit the requisite action of the diaphragm. The inner section Si is provided with a central opening 56, surrounded by the inwardly disposed sleeve 57 which is adapted to be projected within the outer extremity of the elbow 50 and held therein through the medium of the set screw 58 threaded through the elbow and adapted and in order to positively hold the sound box S against independent axial movement in a' predetermined adjustment}. provide the sleeve57 with the longitudin: lly disposed groove 59 58 is adapted to be accommodated, as is believed to be clearly shown in Fig. 9. I tnd it of advantage to have the groove 59 elongated in order that the sound box S may be adjusted relatively to the coacting extremity of the elbow 50, as the requirements of practice may dictate;

In order that the sleeve 57 may be properly positioned within the elbow, it is to be observed that the bore of the elbow at its outer extremity is enlarged, as at (30, while the opposite extremity of the bore of the elbow enlarged, as at ($1. in order that the arm 38 may be properly engaged therewith. I also find it of advantage to have the outer marginal portion of the opening 56 of the section 5% rounded, as indicated at (32. and to also have the outer edge (33 of the shoulder atlorded by the enlarged portion (30 rounded so that interference with the passage of sound therethrough'is substantially eliminated.

Operatively engaged with the base portion til ot' the section 55 of the sound box S is the butterfly mounting (S5 for the stylus arm (56 also operatively engaged, in a conventional way. with the diaphragm D. As herein embodied, the connection between the be obvious that mounting and the base 64; is through the medium of the headed members 67 in threaded engagement with the base 6% and each having interposed between the head thereof and the mounting a spring washer 68 (Fi 12) whereby it will be perceived that the stylus arm 66 is capable of requisite rocking movement. The outer extremity 69 of the stylus arm 66 is enlarged and provided with the longitudinally disposed recess 70 (Fig. 13) adapted to receive tl shank 71 of the stylus member 72, and said enlargement or head 69 is also provided with a transverse recess 73 in communication with the recess 70 and through which is disposed the set screw 7% adapted to contact with the shank 71 and clamp the same in operative position. The stylus member 7'22, as herein embodied,

is in the form of an interior-1y threaded socket adapted to receive the exteriorly threaded mounting 75 in which is positioned a jewel stylus 76. In practice, I find it of advantage to provide the base of the mounting 75 and the base portion of the stylus member .72 vith the openings 77 whereby it will be perceived that upon the application of the. mounting 75 within the member 7 there will be no compression of air which I have found in practice will have a tendency to affect the etliciency of my device.

VV'hile it is thought to be selfevident that the elbow 50 is capable of an adjustment axially of the arm 38, I'wish to state that this arrangement is particularly advantageous as itpermits a regulation of the angle with which the stylus 76 engages the record upon the table 19 whereby the quality of the tone may bematerially benefited in accordance with the character of the rec- Oltl,.lll being understood that my sound reproducing machine may be employed wih equal convenience with records of differing IllilIlUftlCtljlCl'S.

As herein embodied, the marginal portions of the diaphragm D are projected between the adjacent edges of the split rubber ring 78 whereby the diaphragm is efl'ectively maintained against engagement with any of the metallic parts of the sound box. By this arrangement, it will be seen that the diaphragm D may be properly assembled and that the tubular rubber tube 78 serves, to etiectively protect the diaphragm, ashereinbefore stated, against contact with any of the metallic parts of the sound box.

From the foregoing description, it is thought to be obvious that a sound reproducing machine constructed in accordance with my invention is of an extremely simple and comparatively inexpensive nature and is particularly well adapted for use by reason of the convenience and facility with which it may be assembled, and it will also my invention is susceptible of some change and modification without material departure from the principles and spiritthereof and'for this reason I do not wish to be understood as limiting myself to the precise arrangement and formation of the several parts herein shown in carrying out my invention in practice.

1 claim:

1. A device of the character described including a cabinet provided with an opening in one of its faces, a horn within the cabinet and in communication with the opening, a tubular member secured to the cabinet and surrounding the opening therein, a sleeve rotatably supported by the tubular member, a tubular supporting arm in communication with the sleeve and capable of swinging movement independently thereof, a sound box operatively engaged with the tubular arm, and means carried by'the sleeve coacting with the arm for holding the arm against movement independently of the sleeve.

2. A device of the character described including a cabinet provided with an opening in one of its faces, a horn within the cabinet and in communication with the opening, a

tubular member secured to the cabinet and surrounding the opening therein, a sleeve rotatably supported by the tubular member, a tubular-supporting arm in communication with the sleeve and capable of swinging movement independently thereof, a sound boX operatively engaged with the tubular arm, and a sliding member carried by the sleeve, said tubular arm being provided with a cavity to receive the sliding member when moved in one direction for holding the arm against swinging movement independently of the sleeve.

3. A device of the character described comprising a cabinet, a tubular member se cured to a face thereof, a horn within the cabinet in communication with the tubular member, said tubular member being pro; vided with an interior annular shoulder, a sleeve disposed within the tubular member and provided with an annular shoulder underlying the interior shoulder of the sleeve and provided with a head overlying the outer face ofthe tubular member, anti-friction means interposed between the opposed faces of the shoulders of the tubular member and the sleeve, anti-friction means interposcd-i'iotwcen the outer face of the tubular member and the adjacent face of the head, a tubular arm carried by the sleeve and in communication therewith, and a sound box carried by the arm.

4. A device of the character described comprising a cabinet, a tubular member secured to a face thereof, a horn within the cabinet in communication with the tubular member, said tubular member being provided with an interior annular shoulder, a sleeve disposed within the tubular member and provided with an annular shoulder underlying the interior shoulder of the sleeve and provided with a head overlying the outer face of the tubular member, anti-trio tion means interposed between the opposed faces of the shoulders of the tubular member and the sleeve, anti-friction means interposed' between the outer face of the tubular member and the adjacent face of the head, a tubular arm carried by the sleeve and in communication therewith, and a sound box carried by the arm, the shoulder of the sleeve being capable of removal.

- 5. A device of the character described including a cabinet provided with an opening in one of its faces, a horn in communication with the openin a barrel secured to the casing and surroimding the opening therein, a tubular member within the barrel and capable of longitudinal movement independently of the barrel and provided with a longitudinally disposed rack, a sleeve rotatably supported by the tubular member, a tubular supporting arm in communication with the sleeve, av sound box opcratively engaged with the arm, and a pinion carried by the barrel-in mesh with the rack of the tubular member for imparting endwise movement to the tubular member.

(5. A device of the character described including a cabinet provided with an opening in one of its faces, a horn in communication with the opening, a barrel secured to the casing and surrounding the opening therein, a tubular member within the barrel and capable of longitudinal movement independently of the barrel and provided with a lon-. gitudinally disposed rack, a sleeve rotutably supported by the tubular member, a tubular I supporting arm in communication with the sleeve, a sound box opcratrvely engaged with the arm, and a. pinion carried by the barrel in mesh with the rack of the tubulauinember carried by the barrel fol-imparting endwise movement to the tubular member, said pinion projecting extcriorly of the barrel.

In testimony whereof I hereunto nllix my signature in the presence of two witnesses. ANNIE W. SCI [Ml l)'l. \Vitnesses:

Cumulus \V. l'louson, Nunun M. IIoosoN. 

